In cryptography, X.509 is a standard for a public key infrastructure (PKI) for single sign-on (SSO) and Privilege Management Infrastructure (PMI).

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Windows can't find the issuer of a client certificate

Hello and sorry about my bad english. I have a problem about a PKI which I did on Ubuntu using OpenSSL: when I installed the root certificate on Windows (it's a simple hierarchy: ROOT -> Intermediate -...
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1answer
31 views

Is my router trying to MITM my office365 connection?

I recently installed a new BT HomeHub6 router for my household internet connection. It's been less than 24 hours, and I'm seeing a warning pop up on my desktop computer occasionally regarding Outlooks'...
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1answer
46 views

How to sign a CSR on windows

I've got a custom certificate that I'm using as a local root authority. This certifcate has a private key on my machine and is stored in the "Personal" certificates store of the "Local Machine" ...
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0answers
106 views

SSL cert owner != localhost after creating SSH tunnel

I use an SSH tunnel to connect to my work's mail server, then tell my mail client to connect to server "localhost" on port "1993" (the port I chose for the tunnel). I have two different Ubuntu Precise ...
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0answers
51 views

“Copy to File…” button is disabled in certificate dialog

In the certificate details dialog, the button to save it is disabled. Why is that? I remember it working before. What I did was: open a new window of IE (best to close all others first) to visit a ...
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0answers
8k views

Firefox, “Secure Connection Failed” and client certificate

I have a client certificate for Satrtcom. I'm trying to authenticate to their service, but I'm receiving a "Secure Connection Failed" error with error code ssl_error_handshake_failure_alert: The ...
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0answers
30 views

Generate key encipherment and sign certificates

Can someone please direct me to a document or advice on how to generate two individual certificates with key usages, "key encipherment" and "digital signature" using OpenSSL ? As far as i understand ...
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67 views

Changing strong protection passwords of private key in the Windows certificate store

When importing a x509 certificate with a private key into the Windows certificat store, there is an option to set a password for that key (It is called “strong protection” in the Certificate Import ...
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X509 certificate that can only be installed on a particular machine

Is it possible to create a certificate that will not install on a machine other than its intended one? (Using some hardware fingerprint embedded into the cert?) Or alternatively, is there a way to ...